Analysis
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max time kernel
149s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
11/06/2024, 13:33
Static task
static1
Behavioral task
behavioral1
Sample
f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe
Resource
win10v2004-20240426-en
General
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Target
f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe
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Size
81KB
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MD5
a768b21b3e687cdd3d3849bea2308312
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SHA1
c72a66cc8bf608499f8a93ca2c9ab2e82a3d75de
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SHA256
f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39
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SHA512
c2904fa97aef192783ba4cd0ca001ec564121120a1d29e50d658a9f66fc2c01a53c51df14d3703b00b623ed6e23306f30865e64e74ab13bec23661c5d070ab6a
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SSDEEP
1536:RshfSWHHNvoLqNwDDGw02eQmh0HjWOi4t1:GhfxHNIreQm+HiJ4t1
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 4728 rundll32.exe -
Modifies system executable filetype association 2 TTPs 5 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\¢«.exe f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe File created C:\Windows\SysWOW64\¢«.exe f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe File opened for modification C:\Windows\SysWOW64\notepad¢¬.exe f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe File created C:\Windows\SysWOW64\notepad¢¬.exe f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe -
Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\system\rundll32.exe f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe File created C:\Windows\system\rundll32.exe f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe -
Modifies registry class 15 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad.exe %1" f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainSetup = "1718112792" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" rundll32.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "notepad¢¬ %1" f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainVer = "506" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\exefile\shell\open\command f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "\"%1\" %*" f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Key created \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "¢« \"%1\" %*" f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Classes\MSipv\MainUp = "1718112792" rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\txtfile\shell\open\command rundll32.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe Key created \REGISTRY\MACHINE\Software\Classes\MSipv rundll32.exe -
Suspicious behavior: EnumeratesProcesses 28 IoCs
pid Process 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4728 rundll32.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
pid Process 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 4728 rundll32.exe 4728 rundll32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 5092 wrote to memory of 4728 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 80 PID 5092 wrote to memory of 4728 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 80 PID 5092 wrote to memory of 4728 5092 f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe"C:\Users\Admin\AppData\Local\Temp\f9cf89a4ee8ac44cb01eec76789801103566fd745f4ae0a1fd0936d3bdbf3e39.exe"1⤵
- Modifies system executable filetype association
- Drops file in System32 directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5092 -
C:\Windows\system\rundll32.exeC:\Windows\system\rundll32.exe2⤵
- Executes dropped EXE
- Modifies system executable filetype association
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:4728
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
83KB
MD5a7e9154c3d189f2a3166a35686ab943a
SHA10bd740a9cead8fd0882363e095238f1d4cab3320
SHA256ab3ef812031f241c984c54602c8d64a3300c15e37b71f8cf3e6073566199316a
SHA5122a4fa421197da9b762bf69c84070cfde3869b471e0b4bb55746a2815ac42a67c356b395de0110fba5157918a3567da630b9023420c087e9fa02b0836f8ea8b76
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Filesize
76KB
MD513983c402307ef7511970c4f318c2223
SHA19faaff84b18dee46321d716de9074f5bde839b64
SHA2561a30225edb8f7fa873c63b4d478f4ee8198ba8f670b2eb4d3bee7f68485d1d71
SHA512a961f05d1a3f2d83c16d4bfd927aad710835e4efd5d2e48f305697b600e92ac30e802932a56c11058ad31cc5aa5635c0a1cf8611e47394842016f53c02ca6455